Properties of the Number 19720

Nineteen Thousand Seven Hundred Twenty

Basics

Value: 19719 → 19720 → 19721

Parity: even

Prime: No

Previous Prime: 19717

Next Prime: 19727

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 17 × 29

Divisors: 1, 2, 4, 5, 8, 10, 17, 20, 29, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110100001000

Octal: 46410

Duodecimal: B4B4

Hexadecimal: 4d08

Square: 388878400

Square Root: 140.42791745233566

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of partitions of n in which the greatest part is 9. A26815

First differences of A014292. A104862

Numbers k such that the sum of the squares of the divisors of k is divisible by k. A46762

Number of integer compositions of n whose leaders of weakly decreasing runs are strictly decreasing. A374746

Partial sums of A007585. A51797

Number of partitions of n into at most 9 parts. A8638

a(n) = 4·n³ + 4·n. A105374

Number of partitions of n into 9 distinct and relatively prime parts. A341913

Number of primitive (period n) periodic palindromic structures using a maximum of three different symbols. A56514

Consecutive states of the linear congruential pseudo-random number generator (419·s + 6173) mod 29282 when started at s=1. A385036

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